133575273 has 24 divisors (see below), whose sum is σ = 220009608. Its totient is φ = 77363712.

The previous prime is 133575271. The next prime is 133575289. The reversal of 133575273 is 372575331.

133575273 is a `hidden beast` number, since 13 + 3 + 575 + 2 + 73 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 242064 + 133333209 = 492^2 + 11547^2 .

It is not a de Polignac number, because 133575273 - 2¹ = 133575271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133575271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31590 + ... + 35567.

It is an arithmetic number, because the mean of its divisors is an integer number (9167067).

Almost surely, 2^133575273 is an apocalyptic number.

133575273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133575273 is a deficient number, since it is larger than the sum of its proper divisors (86434335).

133575273 is a wasteful number, since it uses less digits than its factorization.

133575273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67193 (or 67190 counting only the distinct ones).

The product of its digits is 66150, while the sum is 36.

The square root of 133575273 is about 11557.4769305415. The cubic root of 133575273 is about 511.1817692992.

The spelling of 133575273 in words is "one hundred thirty-three million, five hundred seventy-five thousand, two hundred seventy-three".